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Beyond RGD: virus interactions with integrins.

Hosni A M Hussein1, Lia R Walker1, Usama M Abdel-Raouf2

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Integrins, cell surface receptors, play a key role in virus entry. This review explores how viruses use integrins, including RGD motifs and glycosylated proteins, for cell invasion and potential therapeutic targeting.

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Area of Science:

  • Cell Biology
  • Virology
  • Molecular Biology

Background:

  • Integrins are cell surface receptors crucial for cell adhesion and signaling.
  • Many viruses utilize integrins as entry points to infect host cells.
  • The precise mechanisms of integrin involvement in viral internalization are still under investigation.

Purpose of the Study:

  • To review the multifaceted roles of integrins in viral infection.
  • To elucidate the mechanisms of virus-integrin interactions, including RGD-dependent and independent pathways.
  • To explore the potential of targeting integrins for antiviral therapies.

Main Methods:

  • Literature review of published studies on virus-integrin interactions.
  • Analysis of viral proteins and their integrin-binding motifs (e.g., RGD).
  • Examination of the role of glycosylation in virus-integrin binding and internalization.

Main Results:

  • Integrins facilitate virus binding, adhesion, and entry into host cells.
  • Viral RGD motifs and non-RGD interactions with integrins are common infection strategies.
  • Carbohydrate moieties on viral proteins can mediate integrin interactions.
  • Integrin activation leads to cytoskeletal changes and intracellular signaling.

Conclusions:

  • Integrins are critical mediators of viral entry and infection.
  • Understanding virus-integrin interactions offers therapeutic intervention opportunities.
  • Targeting integrin-mediated pathways presents a promising strategy for antiviral drug development.